Robust detection and characterization of a bifurcated bi-phasic interface propagating through a granular medium: physically and morphologically

IF 2.3 3区 工程技术 Q2 ENGINEERING, MECHANICAL Experiments in Fluids Pub Date : 2024-11-26 DOI:10.1007/s00348-024-03919-5
Rana Al Nemer, Julien Réthoré, Giulio Sciarra
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Abstract

The detection of an interface separating two zones of low contrast and evolving in a deformable medium is very challenging. The low-contrasted images describing a partially saturated granular medium are replaced by high contrasted images generated from the correlation error maps issued from a standard digital image correlation (DIC) calculation. A robust algorithm has been developed to capture automatically the sought interface evolving in 2D space through time. Capable of detecting all morphological reliefs, this approach is completed by a sequence of steps to remove aberrant contours and track the main advancing interface. Consequently, adequate algorithms have been developed to determine physical and morphological properties that will give insights on the factors that monitor the interface propagation.

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在颗粒介质中传播的分叉双相界面的稳健检测和特征描述:物理和形态学方法
在可变形介质中检测分隔两个低对比度区域的界面是一项非常具有挑战性的工作。描述部分饱和颗粒介质的低对比度图像被由标准数字图像相关性(DIC)计算产生的相关性误差图生成的高对比度图像所取代。我们开发了一种稳健的算法,可自动捕捉二维空间中随时间演变的所需界面。这种方法能够检测所有形态浮雕,并通过一系列步骤去除异常轮廓并跟踪主要的前进界面。因此,已开发出适当的算法来确定物理和形态属性,从而深入了解监测界面传播的因素。
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来源期刊
Experiments in Fluids
Experiments in Fluids 工程技术-工程:机械
CiteScore
5.10
自引率
12.50%
发文量
157
审稿时长
3.8 months
期刊介绍: Experiments in Fluids examines the advancement, extension, and improvement of new techniques of flow measurement. The journal also publishes contributions that employ existing experimental techniques to gain an understanding of the underlying flow physics in the areas of turbulence, aerodynamics, hydrodynamics, convective heat transfer, combustion, turbomachinery, multi-phase flows, and chemical, biological and geological flows. In addition, readers will find papers that report on investigations combining experimental and analytical/numerical approaches.
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